Microencapsulated fire-extinguishing fluids and reactive fire-extinguishing composites formed on their basis

Abstract

The application of microencapsulated liquid gasifiable fire extinguishing agents as reactive filling compounds for fire extinguishing composites is considered. A new process for microencapsulation of envi ronmentally friendly fire extinguishing agents possessing enhanced stability is designed. Novel composite materials are produced with these agents. The thermal destruction processes of microcapsules containing liquid gasifiable fire extinguishing agents of different compositions are considered. Laboratory and bench mark firing tests of the materials are performed.

Double-Layered Polymer Microcapsule Containing Non-Flammable Agent for Initial Fire Suppression

“…When a fire occurs, this induces the ambient temperature to rise sharply, as a result of which, the microcapsules release the core of the non-flammable fire suppression agent. The narrow range of operating temperature means that the fire suppression chemicals can be released in the target temperature range, which reduces the probability of device failure [ 8 , 9 ].…”

“…However, these eco-friendly fire extinguishing agents are difficult to store and utilize due to the low vaporization temperature and high vapor pressure [ 4 , 5 , 6 ]. In order to overcome these disadvantages, methods of using an aerosol system [ 7 ] and encapsulating the fire extinguishing agent with a polymeric material have been proposed [ 8 , 9 , 10 , 11 , 12 , 13 ]. In particular, microencapsulation of fire extinguishing agents has been studied recently for the prevention and suppression of fire in lithium-ion batteries and similar energy storage systems.…”

“…Representative methods for polymer microcapsules include in situ polymerization, interfacial polymerization, UV polymerization and complex coacervation. Vilesov et al [ 8 ] fabricated microcapsules, which contained Novec-1230 with photo gelatin by the coacervation method. They synthesized coacervation at a lower temperature than other methods and were able to easily encapsulate core materials by simply adjusting the pH value [ 14 , 16 , 17 ].…”

The Effect of Epoxy Resin on the Properties of Encapsulated Fire Extinguishing Agent

“…In (14) authors propose a method for producing an EFA. It is a core@shell structure and the core material is perfluoro (2-methyl-3-pentanone).…”

“…The shell significantly affects the decapsulation process of EFA in a narrow time and temperature range. The second is the adding of EFA into a polymer matrix to obtain fire extinguishing composite materials (14) . This paper describes the second option.…”